Intuitive Replication (He can copy archetypal powers and in doing so alters his personality)
Backstory: Grey is an archetonian that was cursed with "the bland" a condition in which one is without personality and as such cannot inherit powers. when he was younger he had to stare into the inevitable moment that his condition would be found out and that no matter how hard he tried in his preparations to become an archetypal warrior and he would be exiled. That day eventually happened but as he was saying goodbye he was upgraded by the mysterious "god" of the Archeverse and now has the ability to copy the powers of others and "build" his own personality. All that the "god" asked in return was that he kill the True Lord. Which he personally agreed to do so.